Type-writing machine.



PATENTED APR. 9, 1907.

L. P. mss, TYPE WRITING MACHINE. APPLICATION FILED SBPT.18.1903.

- INVENTEIR 3 $EBETS-SHEET 1.

L M1 W I 2 H5 TTURNEY PATENTED APR. 9, 1907.

L. P. DISS. TYPE WRITING MACHINE. APYLIGATION FILED SEPT.18.1908.

3 SHEETS-SHEET 2.

INVENTURH H15 ATTDRNEY WITNESSEEI:

PATENTED APR. 9, 1907.

L. P. DISS. TYPE WRITING MACHINE APPLICATION FILED SEPT.18.1903.

s sums-sums.

:- NVENTDR:

WITNESSES Hls TT RN To all whom it may concern.-

. UNITED sTArEs "P TENT oEEioE.

LOUIS P, DISS, or. ILION, NEW YORK, AssieNoRTo WYOKOFF, sannnNsa BENEDICT, or ILIoN, NEW YORK, A CORPORATION or NEW YORK.

TYPE-WRITING MACHINE.

I No. 849,835.

Specification of Letters Patenti,

Patented April 9, 1907.

Application filed September 13,1903. Serial Nd. 173,698. I

Be it known that I LoUIs P. Diss, a citizen of the United Sthtes, and a resident of Ilion, in the county of Herkimer' and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specifica- I tion. 1

My invention relates to ty e-writing machines, and has for its principa ob 'ect to provide means for supporting and shifting the platens of such machines and for controlling the shift of the platen.

My invention consists in certain features of construction and combinations of arts, which will be fully described herein an particularly pointed out in the appended claims.

In the accompanying drawingaFigure 1 is a longitudinal section through a type-writing machine containing my improvements, the

1 section being taken a little to the right of the center of the machine and certain parts being omitted for the sake of clearness of illustration: The mechanism is shown in normal position. Fig. .2 is a sectional side elevation showing a portion -of the machine, many arts being omitted and others broken away.

n this figure the top plate of the machine is shown on the same section as in Fig'. 1, but the other parts are shown on a section near the right-hand sideof the machine. Fig. 3 is a view similar to Fig. 1,\but with numerous parts illustrated in Fig. 1 omitted and the case-shift key shown in depressed position. "Fig. 4 is a fragmentary front view showing portions of the framework and of the mechanism in section and certain shafts and connections in elevation. Fig. 5 1s a detail isometric view of portions of my mechanism,

the framework-beingomitted. Fig. 6 is a fragmentary transverse sectional view show- 1 of the frame, and cooperate with restoringsprings-7, attached to a cross-bar 8, all in a manner well-known in the art.

levers are provided with the usual keyeheads The key- 9 and are guided by pins 10 depending from a transverse-bar 1 1, which is provided with a strip of sound-deadening material 12-, against which the keys normally rest. The typebars 13 are pivoted, as at 14, to hangers 14, attached to a type-bar segment 15, supported by the top plate 3. Said type-bars have crank-arms 16 connected to the key-levers 4 I by links 17, pivoted to. said crank-arms. When in their normal position, the type-bars rest on a strip 18 of felt or similar sounddeadening material, carried by a segmental basket 19, supported by the top plate? of the machine. Each type-bar is provided with two types 20 and 21 in the usual manner. To

avoid confusing the drawings, I have shown but one of the type-bars, though it should be understoodthat a series of segmentally-arranged upwardly and rearwardly striking type-bars are employed and which impact with'the front face of the platen.

The carriage has a bar 22 groovedon its 2 under side, as, shown in Fig.1., and supported over a similar bar 23, fixed to the top plate of the machine by means of antifrictionrollers 24, as shown. The bar: 22'is held against accidental displacement by a plate 25, fastened to the bar 23 by a screw 26 and bent, as shown at 27, to enter a groove in the bar 22. The platen-frame is supported by two forwardly-extending arms 23, one on each end of the carriage. The carriage also hasarms 29 extending toward the rear of the machine and supporting a rail 30, the straight top of whic is engaged by a roller 31, whose spindle 32 is jou'rnaled in cars 33 and 34, projecting from the side ofa bracket 35, rising from the top plate of the machine. The rail is secured a ainst accidental dis.- placement away from the roller 31 by a bent arm or plate 36,- fastened to the bracket 35 by a screw 37 and extending under the bar 30.

The carriage is drawn across the machine by I a spring-coiled within andactuating a drum 38, on the preiphery of which is wound a strap 39, fastened at one end to the drum by a screw 40 and at the other end connected IQO to the carriage. The motion of the carriage i is controlled by the usual feed devices comprising a feed-rack 41, sup orted by aframe 42, pivoted, as at 43, to t e carriage. Sfaid rack normally engages a pinion 44, fast on a 3 paperguides and feed-rollers, some. (if-which shaft journaled in a'hou'sing 45, secured to frame. Said frame is pivoted at -;each,, end.

the top-plate '3 of the machine; An-e'scape-. ment-wheel 46 is operatively "connected to the other end of said shaft'bythe usual pawland-ratchet mechanism, (not shown) I and is engaged by loose and fixedffeeddogs 47, and 48, respectively, ,;and jcarriedby an Oscillating dog-rocker. e9i fi'lhe' d'o -rocker or rocker-arm 49 isfixedfto a rock-s aft 50,

pivoted ,to the framework of the machine andhavingan arm 51-, that,carrie s a transverse bar 52,;coni1ecjt'ed by links 53 to the universal ,bar 54 a manner well known in the art..j 'A restorin s ring 55 issecured at one end to the rock-s a t 50 and at :theother end to a fixedportion of the machine and operates in the usual manner torestore the dog-rocker and associated parts to their platen '56'1is in the form of a cylinder thes' aft" 57 of which-is normal positions. The

journaledin the end pieces 58 of the pla ten-' framesi-fiaid platen-frame comprises the end pieces 58 each having three arm's 59v 60, and, 61. The arms 59 are connected; by

secured to said arms, thus forming a rigid to the arms 28 of the carriage, as indicated oted at 74 to a cran 'at 65. The platen-frame supports'certain are shown in Fig. 1, but which need 'not' 'be particularly described, as they form nopart of the present invention.

Ihe case-shift device comprises a caseshift key-lever 66, piyoted to a in 67, fixed center by ins 10 the same manner as the charactereys; 'A ldop '71 is pivoted to the shift-lever 66 at .72 and connects said lever with a link 73, the upper end of which is piv- I -arm.75, whose hub 76 is secured by a set-screw 77 to arock-shaft 78.

Referring more especially to Fig. 4, it will be seen that three brackets 79-, 80, and 81 depend from the top plate 3 of the machine and are arranged a line across the machine. A fixed rod 82 assesthrough the brackets 80 and 8]. and is eld rigidly by a set-screw 83 in said bracket 81. At its left-hand end this rod is recessed, as shown by dotted lines at 84, and a short rod 85, passing through the bracketl79 and held-rigidly therein by a setvscrew 86,-is similarly recessed, as shown at 87.

The shaft 78 has its ends reduced, and such redficed en'dsyare journaled' in the recesses 84 and-8.7 'An arm 88, Fig. 5, having a'hub 89,

' is fastened to the shaft 78 near its right-hand end by-aset-screw 90, threaded into said hub and engaging the shaft. The arm 88 carries 'is igurnaled therein at 99. "-a' bar 62, the arms by a bar 63, and the 'arrns 61 by a bar 64,said'bars being rigidly an antifriction-roller 98, which "is cylindrical I one or the other be'capable of rocking in such a manner as to keep the roller lying flat against the rail.- In the present instance I have,

shown the rollerxso mounted. As shown in Fig. 5, the free end of said arm 88 is bent toward the front of the machine and isformed with two forked arms 91 and 92, having notches 93 at their free'ends. A block 94 has projecting from its ends studs 95, which arejom'naled'in said notches 93. The block 94 has inone end a segmental slot 96, into which projects the end of a screw 97, threadedfrinto' and extendin through the forked .arm 92; This'slot an screw serve, to limit the oscillation of the block 94 about its piv- Y jots 95'. Said block 94 is hollowed out for the reception of the antifriction-roller 98, which y'reference to Fig. 1 it, will be seen-that the point 65, atwhich the'platen-frame is ivoted to the carriage,is at the back of said anie and that when the arts are in the norw 8 mal} position (shown. in ig. 1)v the platenframe tends to fall, and its downward motion is limited b .the en agement of the bar 64 with the rol er 98.v he arm 88, supportin said roller, has its backward motion limite by'a set-screw 100, threaded into a portion of the top plate 3 of the machine, and engagin a shoulder 10f of saidlever 88. The normzfi position of the platen may be adjusted by means of said set-screw 100, which is then secured against accidental displacement by the lock-nut 102. It will be seen that the platen may be raised to upper-case position by depressing the key-lever 66, which, through its link 73 and arm- 75, rocks the shaft 78 and moves the roller 98 slightly toward the front of the machine. In this motion the "angular relation of the arm 88 and the flat face of the bar 64 is chan ed, owing to the fact that.

these parts osci late about different centers, I

' but the block 94 readily .turns;on-'its pivots '95 and keeps the tread of the roller98 in proper engagement with the fiat side, of the bar 64. The forward motion of the arm 88 p is limited by a'set-screw 1 03, threaded into said arm and adapted to engage a projection 104 of, the top plate 3 of the machine.

s t e cross-piece that unites the lower end of .The set-screw 103 is provided with alock-nut 105. J

sas es r the arms resend tends to h old. the block 107 in its normal position relatively to the .key

.- lever and which is shown in full lines in Figs.-

1 and 3. When the key-lever is depressed a slight rearward pressure exerted. upon t e key-head 106 is effective to turn the block 107 about the pivet 109, thus moving-a nose 111, projecting from said block 107, be-

neath and into engagement with :a pin 112, projecting from the frame of the machine.

The looking position of theseparts isshown in dottedlines in Fig. 3. The friction of the nose 111 pressing aglsltinst the pin 112 issufii cient to overcome t e .tension of the s ring 110., thus holdin the parts in the locks 'condition and the plhten 111 what-maybe termeda shifted printin position. When it is desired to release t e platen and restore it to' lower-case position, the key-head 196 and parts connected thereto may be drawn back around the pivot 109 to the releasing. osition by the finger of the operatoryand t eparts are thus disengaged'and the laten and shiftkey will assume their norma positions when pressure is removed from the key.

A plate 113 is pivoted to oneside of the,

arm 88, so as to be free to oscillate thereon, by means of a shouldered (screw 114. The motion of said plate about said pivot is limited by a pin 1 15, projecting from the arm 88 into a slot 116 in'said plate 113. Said plate is, pressed toward the front of the machine by a spring 117, fastened to the arm 88 by' means of a screw 118-. .The forward end of the plate 113 is for-med into a finger 119, reaching when the arts are-innormal tion, as shown in mg. 1, to the frbnt'si e of the rod 64. The ortion of said finger which is adjacent to sai rod 64 is shaped in a curve approximately the arc of a circle about the pivot 114 as a center. It results from this construction that the finger 119,- which is normally held in the positron shown in Fig.

, 1, constitutes an efl'ective latch'brdetent to cillated about its pivot an prevent any motion of the bar 64 away from the roller 98 and toprevent a vibration of the platen when it moves back to the normal po-.

siticn, thus preventing the formation of hosts by a'type-b'ar comin into contact lien the latter is vibrating. moved by the bar 64, said late may be cs- 5 thefinger v1 19 thus withdrawn from in front of the'bar v64 by the following means:

A special key-lever 120, Fig.2, atthe o rom posite side of the keyboard the shi tkey 66 has a finger-key 121 and is pivoted on the flange. 5-and engaged by a spring 7 in the same manner as the character-keys of the machine; but the key-lever 120 is so formed 7 that it does not engage the universal bar 54.

A loop 122 is pivoted to the key-lever 120 and connects said key-lever to a link 123,

pivoted at 124 to a crank-arm 125, forming 64. osi-.

part of a rock-frame journaled on the rod 82,

above described, as indicated in Ei 5. iSaid' r0 ck-frame comprises hubs 126 an 127,00113- nected by a yoke-bar 128 The rock-frame is held against longitudinal movement on the" rod'82 by a collar 129, fastened to said rod; by a setscrew 130 and engaged on one side by the hub 127 and onthe other by a lug 131, projecting inward from the yoke-bar 128. At its inner end saidfyoke-bar has a lug 132 engaging one .side of the ,bracket 80. A crank-arm 133 is connected to said yoke-bar at its inner end and has a rounded head 134, which enters anotch 135, formed in the lower part of the plate 113', as shown. The coustruction is such that if the key-lever be depressed the rock-frame will be oscillated, moving the arm 133 toward therear of the machine and depressing the" plate 113, as showninFig. 2. V

The operation army invention is asfollows: A depression-of the character-keys 9 when the carriage is innormal osition throws the type-bars'u ward and bac 'ward, causing the type 21, w ichit may be assumed is age lowercase type, to strike thepaper upon the platen-roller. When the case-s ift key 106 1s depressed, the shaft 78 is rocked toward the front of the machine b the link 73 thus moving the arm 88 and ro ler 98 toward the 5 I front of the machine and lifting the platen to the position shown Fig. 3, the block 94 turnin on its pivots 95, to keep the roller 98 presse flat,against the side 64" of the-bar If the case-shift. key is depressed with some force, any overthrow of the platen, which might causethe printing to be made in the wrong place on-the'paper, and any vibraioo tion of thepla'ten, which would formgho'sts in the pirintin ,"are prevented by the finger 119. hen t e platen is in its upper-case position, it is in position to be struck by the upper-case type 20. Whether the platen is in its up or or lower case position the operation of t e character-keys rocks the escape ment-frameand-permits the carriage to be 7 fed step by step across the machine," the rollers 24 and 31 su porting the carriage-truck and the roller 98 engaging the platen-frame. If for any reasonv it is desired t o raise the platen to a non-printing'positionor to. a po-" sition higher than its upper-case' positionas, i"or1example,.for the purpose of making.

erasures the key-lever 120 is depressed,

thus withdrawing the finger 119 from in-rzo.

front of the bar 64. The platen-frame may then be elevated by hand. Ifthen the 'key- I lever 120 be released, the finger 119 will re-.

-suine its normal position,which will then behind the bar 64, and said finger will sus.

tain the platen-frame in its elevated position, as showninFig. 6. The platen-frame may bereleasedfrom the finger 119 by .operating either: of the key-levers 120 or 66. If the lever 120 be operated, the plate 113.

will turnabout its pivot 1l4 and the finger 119 'bethus withdrawn :from' engagement with the bar 64; If the key-lever-66 be depressed, the arm 88'wi,ll bemove'd forward,

carrying the plate 113'with it, and thus carryin the finger 119 ton positionwhere the weig it of the ,laten-frame will depress 't and allow the frameto descend until the bar .64 en ages the roller 98; It will thus beplaten-frame when the case-shift "device is operated and also a detent to hold the car riage' in its non-printing position when it is desired to-do so for the purpose of making erasures or for other reasons.

- It will be observed that the platen is supported and controlled by'means which are extremely simple and rigid; the platen frame is-pivoted directly to the truck of the carriage and normally tends to fall to a position below either of its printing positions;

that it is supported against falling by the roller 98, which is placed near the center "of the machine'and approximately in the vertical lane through the printing-point and exten ingfrom back to front ofthe machine; the finger 119 is located in the same plane, so

that the platen is always rigidly supported at the printing-point! and the means for preventing vibration of the platenywhether due to violent operationof the case shift'key or by the movement of the platen from one case "position to another or to the blow of the typeitself, engages the. platen-frame at the point where it is most important that said platen beeXactly positioned and rigidly held; a, It

will also be observed that I have. rovided an overhanging platen-frame which is can-fed by the carriage-truck forward of all'of the means for supporting and guiding said truck and that saidplaten-frame is shifted-up and down. a This is an important feature in this classof maohine's where' the visibility of the writing is a prime consideration. It-will also be observedthat the case-shift device is located tothe rearof the axis of the platen, sothat it is" out of the way of the type-bars and of the meansforconnectingsaidftypa bars with the keys.

What-I claim as new, and desire to secure byLetters Patent, is-

1. The-com'bination with a platen and a platen-frame movable to move said platen bodily away from printing position, of a keycontrol-leddevice separate :fro'msaid platenframe and c'ooperating,.Jwith saidPlatenframe to hbldsaid platen away from printing position. 1

. The combination of a platen movable to i a non-printing \position, and means normally operative to prevent such motion but operable to allow suchmotionand' to retain said platen in'such non-printing position.

platenrin such non-printing" position; and a gaged from saidcase-shift device.

3. The combination of a platen mounted to have a case-shift motion,- and means normally operative to. limit such motion but releasable at will to permit a further motion of 'case shift motion and-also movable to anonprinting position; means .for holding: said key for imparting said case-shift motion to said platen and also operable to release said holding means. J i

6: The combination with' a -platen of a case-shift device therefor; comprising a caseshift key and an overthrow-preventer and-a special key for controlling said overthrowpreventer to permitsaidcarriage to move to a non-printing position.

7. The combination-with aplaten having a normal position, a shifted printing position and a non-printing position, of key-com trolled means for holding said platen in eitherits shifted printing position or its nonprintin position. p a

8. T e-combination with a platen-frame, of'a case-shift device-having a-limited mo.- tion; and key-controlled means for preventing said platen-framefrom becoming disen [co 9. The combi-nation witha platen mount ed to have a case-shift-motion and a motion to a non-printing position; of means for im-' parting said case-shiftmotion'to said'platen, and means connected to said case-shift means forholding said platen in said nonprinting'position.

i 10. The combination of a platen mounted in a pivoted frame that is adapted to rock on its pivotto impart to said platen a case-shift no motion and-also amotion; to a non-printing position, and a key carried by the frame of the machine andconnections controlling such motion of said platen to non printing position.

p I15 11.= The combination with a platen-frame,

of a-case-shift device, a key for operating said-case-shift device, a detent connected to saidfcase-shift device and cooperating with said platen-frame, and a special keycontrol- 12o ling said detent.

i 12. The combination with a platen-frame,

of a case-shift device comprising a key-operiated rock-frame; a detent pivoted to said rock-frame,- and key-operated means for con- 12 5 trolling said detent.

13. The combination with a platen-frame, of a-detent adapted to engage a portion of said frame on one side thereof, to prevent motion'of said frame in one direction'or to r30 engage said frame por'tion'bn the other side thereof to prevent motion of said frame in the other direction: and means for opgratin'g' said detent;

14.-The combination with a'platen of a case-shift mecha nism comprising a pivoted key-lever; a finger-key 'connected to said lever by a piece pivoted to said lever; and a fixed part; the .construction being such that said pivoted piece may be-turned on its pivotal connection with the key-lever and pushed under said fixed part if desired, in order to lock the key-lever in depressed position.

15.A platen-frame comprising a bar; a

- case-shift device comprising means engaging said bar on one side to impart 'a case-shift motion thereto; and an overthrow preventer cooperating with saidbar on the opposite side; and means for moving said over-,

throwreventer to inoperative position.

16. X platen; types adapted to strike said platenion its front vertical face; a frame supporting said platen and pivoted to the rear of said platen; and having a bar below the pivotal axisof said frame a case-shift device v.ll8.

comprising a movable part and an antifric tion-roller mounted in said movable part and engaging said bar and supporting said frame;

and an overthrow-preventer pivoted to said movable part.

17. In" a front-strike type writing machine, a platen; ty es adapted to strike the chine, a platen; ty es adapted to strike the case-shift device com front face of said 'p at'en; a carriage-truck;'a platen-frame pivoted directly to said truck and having its pivotal, axis to the rearof the printing-point; saidplaten-frame comprising a a rail extending lengthwise of the-platen below. said pivotal axis; in combination with a rising an antifriction member engaging sai rail, and means for moving said antifriction member to rock said platen-frame.

19. Ina front-strike. type-writing machine, a platen ;'types adapted to strike the. platen; a pivoted platen-I front face of said frame having its pivotal axis to the rear of the printing-point; said platen-frame comprising arail extending lengthwise thereof below said pivotal axis; in combination with a platenshifting. device comprising an antifriction: rollerjournaled in a movable part and engaging said rail; an overthrow-preventer coj movable carriage,

operating with said rail and connected to. said movable part; and a case-shift keyfor controlling said movable part.

20. In a type-Writing machine having a a platen-frame pivoted to the truck of the carriage-and acase-shift device engagingand supporting said! platenframe near the center of the machine and controlling the shifting 'movements thereof and affordinga free travel of'the carriage.

21. In a type-writing machine having a movable carriage, a platen; types adapted to strike against the front face of said platen; a' platen-frame pivoted to the truck of the car riage; and 'a case-shift device engaging and supporting said platen-frame approximately in the transverse vertical plane of the printing-point. v

22. In a type-writing machine, the combination-with a pivotally -mounted platenframe having a fiat-faced rail; with a caseshift device comprising an oscillating part carrying a cylindrical antifriction-roller, engaging said flat-faced rail; one of said engaging members being pivotally supported, so that the roller may always engage the flat faceof the rail.

23. The combination of a platen-frame having a fiat-faced. longitudinal bar, of a shift device for said platen-frame comprising aroller mounted on a pivoted frame and engaging said flat-faced bar. 7 v

24. In a type-writing machine, the combination of a platen-carrier, a guide-rail, a pivoted finger adapted to engage one side of the rail when in its normal position-and to engage another side position.

to support it when in an elevated v 25. In a type-writing machine, the combination of a platen-carrier, a guide-rail securedto the carrier; a pivoted finger adapted to, engage the lower side of the rail to support it when in an elevated position and be released to let the carrier drptp into its normal position, and means for e eoting a disengagement between the pivoted finger and rail.

26. In a type-writing machine, the combination of a truck,

a carrier for the platen pivoted to the truck at each end, a guiderail secured to the carrier, a rocking arm, a

roller carried by the rocking arm and supporting the gulde-rail, a hooked finger pivoted to the rocking arm and engaging the rail on the side opposite the roller, and key- .actuated means for operating the rockingarm.

27. In a type-writing machine, the combination of a pIaten carHer, a guide-rail thereon, a rocking arm, means for actuating same, a roller carried by the rocking arm, a hooked finger pivoted to the rocking arm and having a slot, a spring exerting a pressure on the finger, and a stud on the rocking arm playingin the slot of the finger to adapted to shift the platen-carrier, means for operating said arm, a hooked finger connected to the rocking arm and adapted to hold the carrier in an elevated position and operate independently of therocking arm, and means for operating the finger.

29. In a type-writing machine, the combination of a platen-carrier,a guide-rail, a rocking arm, an antifriction-roller carried by the rocking arm and supporting and shifting the guide-rail, key-actuated means for operating the rocking arm, a hooked finger pivoted to the rocking arm and adapted to secure the rail against lateral movement on the side opposite the roller, and a key-actuated lever adapted to throw the finger on its pivot and release the guide-rail. f

30. In a type-Writing machine, the combination of atruck, a platen, a frame pivoted to the truck and supporting the platen, a guide-rail forming a part of the frame and having a flattened side, a roller operating on the flattened side of the rail'and adapted to change the angle of its axis as the platenframe is shifted, a rocking arm to carry the roller, a shaft carrying the rocking arm and ,means foractuating said shaft.

31.- In afront-strike ty e-writing machine, a platen; types arranged to strike the front face of said platen; a carriage-truck a platenframe pivoted directly to said truck and having its pivotal axis to the rear of the printingpoint, said platen-frame comprising a rail extending lengthwise of the platen below said pivotal axis; in combination with a caseshift device including a rock-shaft parallel to said rail and havin an arm cooperating with said rail and contro ling the oscillation of said frame on its pivots.

32. In a front-strike ty e-writing machine, a platen; types arranged to'strike the front face of said platen; a carriage-truck aplatenframe pivoted directly to said truck and having its pivotal axis to the rear of the printing-' point, said platen-frame comprising a rail extending lengthwise of the platen below said pivotal axis; in combination with a case-shift device including a rock-shaft parallel to said rail and having an arm, an antifriction mem ber mounted on said arm and engaging'said rail, and means for oscillating said rock-shaft to rock said platenframe.

33. The combination with rearwardlystriking types, of a platen against the front face of which said types are arranged to strike; a platen-frame; a carriage-truck upon which said platen-frame is ivotally mounted; a traverse-rail arranged back of said platen and supporting said truck; means back of said traverse-railfor preventing said about its truck from tilting' about said rail; and a case shift device for rocking said latch-frame pivot, and moving said platen up and down.

34. The combination withacarria e-tr-uck and \ineans for supporting and'gui ing the same, of an overhanging platen-frame carried by said carriage-truck forwardly of all of the means for supporting and guidingsaid truck, a platen in said platen-frame, types adapted to strike the front face of said platen,

and means for imparting an .up and-down case-shift motion to said platen.

35. The combination with a carriage-truck and with means for supporting and guiding the same, of a platen-frame pivotally mounted on said carriageetruck forwardly of said supporting and guiding means and having a longitudinal bar below its pivotal support; a platen in said platen-frame; types arranged to strike the front face of'said platen; a rock- -shaft below said longitudinal bar, an arm 011 said rock-shaft engaging said longitudinal bar; and means for rocking said rock-shalt to imparta case-shift motion to said platen.

36. The combination with a carriage-truck and means for supportingand guiding the same, of a platen-frame pivotally mounted on said carriage-truck forwardly of said guiding and supporting means and having a longitudinal bar below its pivotal support; a rock-shaft having an arm engaging the rear face of said bar, a case-shift key for oscillating said rockshaft, and adjustable means for limiting the motion of said arm,

37. A platen-frame mounted to have a too case-shift motion andhaving a longitudinal rail, a crank-arm controlling the motion of said rail in both directions, means for'0scil lating said crank-arm, and adjustable means for limiting the motion of said crank-arm in both directions. v r

38. 'In a t e-writing machine, the combination of a p aten; types arranged to strike the front face of said platen; a pivoted platen,- frame having its pivotal axis to the rear of the printingepoint and having a longitudinal bar below said pivotal axis; a rock-shaft mounted in the frame of the machine and hav in anarm cooperating with said bar on both si es thereof; means for oscillating saidrOcle.

shaft; and adjustable means for limiting the motion of said arm in both directions;

39. In a front-strike type-writing machine,

a platen; types arranged to strike the front face of said platen; a pivoted platen-frame having its pivotal axis to the rear of the printing-point, said platen-frame comprising a rail extending lengthwise thereof below said pivotal axis; in combination with a caseshift device comprising a member engaging said rail and supporting the same While permittin 'a free traverse of said frame; an adjustab e part between which and said rail said member is interposed; and means for op- 'erating said member to impart a shifting motion to said platen-frame and laten.

- aboveand below the platen; and a'case-shift the motion of sai device cooperating with one of said bars.

41. The combination of a platen; types arranged to strike the front face of said platen;

a pivoted platen-frame having its 'pivotal axis to the rear of the printingpoint and having a lon itudinal bar below said pivotal axis; arock-s aft below said longitudinal bar; an arm 'on said rock-shaft cooperating'with the rear face of said bar; and a shift-key for rocking saidrock-shaft. 42. n a type-writing machine, the combination of a carriage, a platen-frame pivoted directl to said carriage and having a longitudina bar below its pivotal support, and a member which en a es said bar and limits '5 ame about its pivotal support.

'- member .engaging said bar an 43. Ina type-writing machine, the combinationof a carriage, a platen-frame pivoted directly to said carriage and having a lon itudinal .bar back of the printin oint, an .a

g limiting the motion of said platen-frame about its pivotal support. I v

44. In a type-writing machine, the combination of a carriage, a platen-frame pivotally mounted on said carriage and having a longitudinal'bar below its pivotal support, ,and an adjustable member enga ing the rear side of said bar and limiting e. motion of said platen-frame about its pivotal support.

- 45. In a type-writing machine, the combination of a carriage and platen-frame pivotally mounted on said carriage and having a lon itudinal bar belowits pivotal support;

a re ative fixed antifriction member engaging the rear side of said bar and limiting themotion of-said platen-frame about itsivotal contro ing said restra' means.

' 47 The combination'o a, platen mountedv in apivoted frame that is adapted to rock on its pivot to impart to said'platen==-a case-shift motion and also a motion to a non-printing pos1t1on, means normally preventing such rocking to non-printin position, and a key and connections contro ling said means.

Si ned at Ilion, in the county of Herkimer and tate of New York, this 14th day of September, A. D. 1903.

LOUIS P. DISS.

Witnessesz' R; A. SHEPARD, A.B. RUssELL. I

support; and means for adjusting sai memjprmtin position, and a key and connections 

